Flock-like PC plastic material and its preparation method and application

Abstract

The application provides a kind of imitated flocked PC plastic and its preparation method and application, the imitated flocked PC plastic includes PC resin, ABS resin, impact agent, black pigment and fiber point, and the PC resin includes first PC resin and second PC resin, the first PC resin is under the condition of 300 DEG C and 1.2kg, and the melt index of second PC resin is under the condition of 300 DEG C and 1.2kg, and the melt index is greater than or equal to 25 g / 10 min;By selecting the PC resin with the above two different melt indexes, the embedding of black resin to fiber point is effectively reduced, the emergence rate of fiber point in black resin is improved, and the tailing phenomenon is also reduced, finally, the PC plastic with high blackness, no tailing phenomenon and high fiber point emergence rate is obtained, which is very suitable for application in the fields of automotive interior and exterior, household appliances and consumer electronics.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of composite materials, and particularly relates to a PC plastic material with a simulated flocking effect, and a preparation method and application thereof. BACKGROUND

[0002] Polycarbonate, also known as PC plastic, has excellent heat resistance, electrical insulation and processing performance, and is commonly used in vehicle body panels, instrument panels and other fields. At the same time, plastic parts with spot aesthetic effects are gradually valued in the fields of automotive interior and exterior, home appliances and consumer electronics due to their characteristics of integrated molding, and have formed a green and low-carbon trend.

[0003] For example, CN113861561A discloses a simulated flocking polypropylene composite material, and a preparation method and application thereof. The application focuses on the functional display of the simulated flocking aesthetic effect, antibacterial and bacteriostatic, and odor removal and dust removal of the polypropylene composite material. CN117183202A discloses a polypropylene elastomer simulated flocking plastic part and a preparation method thereof. The application mainly focuses on the influence of injection molding process on the simulated flocking effect of polypropylene elastomer.

[0004] As can be seen from the above, the preparation of PC material with spot aesthetic effect and its application in the field of automotive interior not only echoes the green and low-carbon environmental protection theme, but also enriches the appearance effect of the product, thereby improving the recognition and value of the product. However, there is no relevant report so far. Since PC material contains components such as impact modifiers that improve the performance of the material and have poor compatibility with PC, the brightness of the color is much higher than that of single PC resin raw material. At the same time, the color of automotive interior materials is mainly dark black. Therefore, compared with other resin systems, more carbon black powder needs to be added to achieve the same blackness when PC system is used for automotive interior materials. However, too much carbon black powder will seriously cover the spot effect, affecting the wide application of PC material with spot aesthetic effect.

[0005] Therefore, it is still a technical problem urgently needed to be solved in the field to develop a simulated flocking PC plastic material with high blackness, no tailing phenomenon and high fiber point emergence rate. SUMMARY

[0006] In view of the deficiencies in the prior art, the purpose of the present application is to provide a simulated flocking PC plastic material, a preparation method and application thereof. The simulated flocking PC plastic material is prepared by selecting two PC resins with different melt indexes to obtain a PC plastic material with high blackness, no tailing phenomenon and high fiber point emergence rate, which can be widely used in the fields of automotive interior and exterior, home appliances and consumer electronics.

[0007] To achieve the purpose of the present application, the following technical solutions are adopted:

[0008] In a first aspect, the present application provides a flocked PC plastic material, the flocked PC plastic material comprising the following components by weight:

[0009] PC resin 50-70 parts by weight;

[0010] ABS resin 0-30 parts by weight;

[0011] impact agent 0-20 parts by weight;

[0012] black pigment 0.1-1 parts by weight;

[0013] fiber point 0.1-1 parts by weight;

[0014] The PC resin comprises a first PC resin and a second PC resin, and the first PC resin has a melt index of ≤ 23 g / 10 min (e.g., 23 g / 10 min, 22 g / 10 min, 20 g / 10 min, 18 g / 10 min, 16 g / 10 min, 14 g / 10 min, 12 g / 10 min, 10 g / 10 min, 8 g / 10 min, 6 g / 10 min, 4 g / 10 min, or 2 g / 10 min, etc.) at 300°C and 1.2 kg, and the second PC resin has a melt index of ≥ 25 g / 10 min (e.g., 26 g / 10 min, 28 g / 10 min, 30 g / 10 min, 32 g / 10 min, 34 g / 10 min, 36 g / 10 min, 38 g / 10 min, 40 g / 10 min, 42 g / 10 min, 44 g / 10 min, 46 g / 10 min, 48 g / 10 min, 50 g / 10 min, 52 g / 10 min, 54 g / 10 min, 56 g / 10 min, 58 g / 10 min, 60 g / 10 min, 70 g / 10 min, 80 g / 10 min, or 100 g / 10 min, etc.) at 300°C and 1.2 kg.

[0015] The PC / ABS plastic material provided by the present application comprises PC resin, ABS resin, impact agent, black pigment and fiber point, and the PC resin comprises first PC resin and second PC resin, and the melt index of the first PC resin is less than or equal to 23 g / 10 min under the condition of 300 DEG C and 1.2 kg, and the melt index of the second PC resin is greater than or equal to 25 g / 10 min under the condition of 300 DEG C and 1.2 kg; on the one hand, the high blackness of the obtained PC / ABS plastic material is realized by adding black pigment; on the other hand, by limiting the PC resin to comprise the first PC resin with relatively low melt index and the second PC resin with relatively high melt index, the flowability of the black resin and the fiber point during processing is effectively adjusted by selecting the above two PC resins with different high and low melt indexes to match, so that the flow rate difference between the two is minimized, and the instant cooling of the fiber point during processing can be synchronized with the instant solidification of the black resin, thereby reducing or even avoiding the embedding of the black resin to the fiber point, improving the emergence rate of the fiber point in the black resin, and reducing the tailing phenomenon, and finally obtaining the PC / ABS plastic material with high blackness (depth), no tailing phenomenon and high fiber point emergence rate.

[0016] The content of the PC resin can be 50 parts by weight, 52 parts by weight, 54 parts by weight, 56 parts by weight, 58 parts by weight, 60 parts by weight, 62 parts by weight, 64 parts by weight, 66 parts by weight, 68 parts by weight or 70 parts by weight, etc.; and the mass percentage content of the PC resin in the PC plastic material is not less than 50%.

[0017] In the present application, the PC resin comprises aromatic polycarbonate, for example, bisphenol A type PC resin.

[0018] The content of the ABS resin can be 0 parts by weight, 2 parts by weight, 4 parts by weight, 6 parts by weight, 8 parts by weight, 10 parts by weight, 12 parts by weight, 14 parts by weight, 16 parts by weight, 18 parts by weight, 20 parts by weight, 22 parts by weight, 24 parts by weight, 26 parts by weight, 28 parts by weight or 30 parts by weight, etc.

[0019] The content of the impact agent can be 0 parts by weight, 2 parts by weight, 4 parts by weight, 6 parts by weight, 8 parts by weight, 10 parts by weight, 11 parts by weight, 12 parts by weight, 13 parts by weight, 14 parts by weight, 15 parts by weight, 16 parts by weight, 17 parts by weight, 18 parts by weight, 19 parts by weight or 20 parts by weight, etc.

[0020] The content of the black pigment can be 0.1 parts by weight, 0.2 parts by weight, 0.4 parts by weight, 0.6 parts by weight, 0.8 parts by weight or 1 part by weight, etc.; and the mass percentage content of the black pigment in the PC plastic material is not less than 0.2%.

[0021] The content of the fiber points can be 0.1 parts by weight, 0.2 parts by weight, 0.4 parts by weight, 0.6 parts by weight, 0.8 parts by weight, or 1 part by weight, etc.

[0022] Preferably, the melt index of the first PC resin under the condition of 300°C and 1.2 kg is 8-18 g / 10 min.

[0023] Preferably, the melt index of the second PC resin under the condition of 300°C and 1.2 kg is 28-60 g / 10 min.

[0024] In the present application, the test method of the melt index of the first PC resin and the second PC resin can refer to ISO 1133-1:2022.

[0025] Preferably, the mass ratio of the first PC resin and the second PC resin is 1:(1-5), such as 1:1, 1:1.5, 1:2, 1:2.5, 1:2.6, 1:2.7, 1:2.8, 1:2.9, 1:3, 1:3.1, 1:3.2, 1:3.3, 1:3.4, 1:3.5, 1:4, 1:4.5, or 1:5, etc., and further preferably 1:(2.5-3.5).

[0026] Preferably, the L value of the suede PC plastic material is ≤30, such as 30, 28, 26, 24, 22, 20, 18, 16, 14, 12, or 10, etc., and further preferably ≤29.

[0027] In the present application, the test method of the L value of the suede PC plastic material can refer to GB / T 3979-2008.

[0028] Preferably, the content of the ABS resin in the suede PC plastic material is 10-30 parts by weight.

[0029] Preferably, the melt index of the ABS resin under the condition of 220°C and 10 kg is 5-80 g / 10 min, such as 5 g / 10 min, 10 g / 10 min, 15 g / 10 min, 17 g / 10 min, 19 g / 10 min, 21 g / 10 min, 23 g / 10 min, 25 g / 10 min, 30 g / 10 min, 50 g / 10 min, 70 g / 10 min, or 80 g / 10 min, etc., and further preferably 15-25 g / 10 min.

[0030] In the present application, the test method of the melt index of the ABS resin can refer to ISO 1133-1:2022.

[0031] Preferably, the content of the impact agent in the suede PC plastic material is 10-20 parts by weight.

[0032] In the present application, the specific type of the impact modifier is not particularly limited, and the commonly used impact modifier in the art can be selected.

[0033] Illustratively, the impact modifier can be selected from acrylate, acrylate-butadiene copolymer, and terpolymer of methyl methacrylate-butadiene-styrene.

[0034] Preferably, the black pigment comprises any one or a combination of at least two of carbon black, perylene black, or benzidine black, and is further preferably carbon black.

[0035] Preferably, the fiber point comprises mica flake type fiber point and / or gold dust type fiber point.

[0036] Preferably, the imitation flocked PC plastic material further comprises any one or a combination of at least two of heat-resistant agent, antioxidant, lubricant, or light stabilizer.

[0037] Preferably, the content of the heat-resistant agent in the imitation flocked PC plastic material is <10 parts by weight, for example, 9 parts by weight, 8 parts by weight, 7 parts by weight, 6 parts by weight, 5 parts by weight, 4 parts by weight, 3 parts by weight, 2 parts by weight, or 1 part by weight, etc.

[0038] In the present application, the specific type of the heat-resistant agent is not particularly limited, and the commonly used heat-resistant agent in the art can be selected.

[0039] Illustratively, the heat-resistant agent can be selected from random copolymer of styrene, nitrogen phenyl maleimide, and maleic anhydride.

[0040] Preferably, the content of the antioxidant in the imitation flocked PC plastic material is 0.1-0.5 parts by weight, for example, 0.1 parts by weight, 0.15 parts by weight, 0.2 parts by weight, 0.25 parts by weight, 0.3 parts by weight, 0.35 parts by weight, 0.4 parts by weight, 0.45 parts by weight, or 0.5 parts by weight, etc.

[0041] Preferably, the antioxidant comprises a combination of hindered phenol antioxidant and phosphite antioxidant.

[0042] Illustratively, the hindered phenol antioxidant comprises 2,6-di-tert-butyl-4-methylphenol, antioxidant 1010, antioxidant 1076, etc.; and the phosphite antioxidant comprises antioxidant 168, antioxidant 626, etc.

[0043] Preferably, the content of the lubricant in the imitation flocked PC plastic material is 0.2-0.5 parts by weight, for example, 0.2 parts by weight, 0.25 parts by weight, 0.3 parts by weight, 0.35 parts by weight, 0.4 parts by weight, 0.45 parts by weight, or 0.5 parts by weight, etc.

[0044] In the present application, the specific type of the lubricant is not particularly limited, and a commonly used lubricant in the art can be selected.

[0045] Illustratively, the lubricant comprises a pentaerythritol-based lubricant, for example, a pentaerythritol stearate.

[0046] Preferably, the content of the light stabilizer in the flocked PC plastic is 0.5-1 parts by weight, for example, 0.5 parts by weight, 0.55 parts by weight, 0.6 parts by weight, 0.65 parts by weight, 0.7 parts by weight, 0.75 parts by weight, 0.8 parts by weight, 0.85 parts by weight, 0.9 parts by weight, 0.95 parts by weight, or 1 part by weight, etc.

[0047] In the present application, the specific type of the light stabilizer is not particularly limited, and a commonly used light stabilizer in the art can be selected.

[0048] Illustratively, the light stabilizer can be selected from UV-72, UV-234, etc.

[0049] In a second aspect, the present application provides a preparation method of the flocked PC plastic as described in the first aspect, which comprises the following steps:

[0050] (1) mixing PC resin, ABS resin, black pigment, impact resistance agent, optionally heat resistance agent, optionally antioxidant, optionally lubricant, and optionally light stabilizer to obtain a mixture;

[0051] (2) performing main feeding of the mixture obtained in step (1), side feeding of fibers, and extrusion molding by using an extruder to obtain the flocked PC plastic.

[0052] Preferably, the mixing time in step (1) is 3-5 min, for example, 3 min, 3.2 min, 3.4 min, 3.6 min, 3.8 min, 4 min, 4.2 min, 4.4 min, 4.6 min, 4.8 min, or 5 min, etc.

[0053] Preferably, the extruder in step (2) is a twin-screw extruder.

[0054] Preferably, the temperature of the extrusion molding in step (2) is 240-250℃, for example, 240℃, 241℃, 242℃, 243℃, 244℃, 245℃, 246℃, 247℃, 248℃, 249℃, or 250℃, etc.

[0055] In a third aspect, the present application provides an application of the flocked PC plastic as described in the first aspect in automotive interior and exterior, consumer electronic appearance parts, or household appliance appearance parts.

[0056] The numerical ranges recited herein are inclusive of the endpoints and of any range that would be formed, even though that range would not explicitly be recited. Where a range of values is recited, it is meant to include all stated, interpolated, and extrapolated values, including the endpoints. To the extent that any numerical limits are stated herein as encompassing one or more values, it is contemplated that such values are inclusive of all values within the stated range, even if such values are not explicitly stated.

[0057] Compared with the prior art, the present application has the following beneficial effects:

[0058] The flocked PC plastic material provided by the present application comprises PC resin, ABS resin, impact agent, black pigment and fiber points, the PC resin comprises first PC resin and second PC resin, the melt index of the first PC resin is ≤23 g / 10 min under the condition of 300 DEG C and 1.2 kg, and the melt index of the second PC resin is ≥25 g / 10 min under the condition of 300 DEG C and 1.2 kg; by selecting the two kinds of PC resins with different melt indexes to be matched, the embedding of the black resin to the fiber points is effectively reduced, the emergence rate of the fiber points in the black resin is improved, and the tailing phenomenon is also reduced, finally the PC plastic material with high blackness, no tailing phenomenon and high fiber point emergence rate is obtained, which is very suitable for application in the fields of automotive interior and exterior, household appliances and consumer electronics. BRIEF DESCRIPTION OF DRAWINGS

[0059] Fig. 1 It is a physical picture of the flocked PC plastic material provided by Example 1;

[0060] Fig. 2 It is a physical picture of the flocked PC plastic material provided by Comparative Example 1;

[0061] Fig. 3 It is a physical picture of the flocked PC plastic material provided by Comparative Example 5. DETAILED DESCRIPTION

[0062] The technical solutions of the present application will be further described below through specific embodiments. Those skilled in the art should understand that the embodiments are only to help understand the present application, and should not be regarded as specific limitation to the present application.

[0063] The information of some raw materials involved in the following examples and comparative examples is shown as follows:

[0064] (A) PC resin

[0065] PC resin 1A: melt index is 10 g / 10 min (300 DEG C / 1.2 kg), purchased from Luxi Chemical, and the model number is TY1609T-11;

[0066] PC resin 1B: melt index is 15 g / 10 min (300 DEG C / 1.2 kg), purchased from Saudi Basic Industries Corporation, and the model number is PC FXE4271L;

[0067] PC resin 1C: melt index of 22 g / 10 min (300 °C / 1.2 kg), purchased from SABIC, brand name PC HP2EU;

[0068] PC resin 1D: melt index of 5 g / 10 min (300 °C / 1.2 kg), purchased from SABIC, brand name LEXAN TM PC 0700.

[0069] PC resin 2A: melt index of 30 g / 10 min (300 °C / 1.2 kg), purchased from Mitsubishi Engineering, brand name PC H-3000F;

[0070] PC resin 2B: melt index of 46 g / 10 min (300 °C / 1.2 kg), purchased from SABIC, brand name PC XHT2146;

[0071] PC resin 2C: melt index of 26 g / 10 min (300 °C / 1.2 kg), purchased from Taizhou Chemical, brand name PC IR1700;

[0072] PC resin 2D: melt index of 71 g / 10 min (300 °C / 1.2 kg), Covestro, brand name Makrolon DP 1-1265.

[0073] (B) ABS resin: melt index of 20 g / 10 min (220 °C / 10 kg), purchased from Liaoning Jinfa Technology Co., Ltd., brand name ABS KF-730.

[0074] (C) Impact modifier: specifically acrylate impact modifier, purchased from Anchu Donghai Plastic Industry Co., Ltd., brand name Q500.

[0075] (D) Black pigment

[0076] Carbon black: purchased from Cabot, brand name M717;

[0077] Perylene black: purchased from BASF, brand name Black L 0086;

[0078] Benzidine black: purchased from Shanghai Tianrui Trading Co., Ltd., brand name Black R.

[0079] (E) Fiber point:

[0080] Mica flake type fiber point: purchased from Cangzhou Dahua Co., Ltd. Polysea Branch, brand name CH8115;

[0081] Golden onion powder type fiber point: purchased from Changjin New Material, brand name CLW01-128.

[0082] (F) Heat-resistant agent: specifically a random copolymer of styrene, nitrogen phenyl maleimide and maleic anhydride, purchased from Jiaxing Huawen Chemical Co., Ltd., with a brand of HW-320.

[0083] (G) Antioxidant

[0084] Antioxidant 1076: hindered phenolic antioxidant, purchased from Tianjin Lianlong New Material Co., Ltd., with a brand of RIANOX 1076;

[0085] Antioxidant 168: phosphite antioxidant, purchased from Tianjin Lianlong New Material Co., Ltd., with a brand of RIANOX 168.

[0086] (H) Lubricant: specifically pentaerythritol stearate, purchased from Shanghai Chengzai Cheng Chemical Co., Ltd., with a brand of PETS-AP.

[0087] (I) Light stabilizer: purchased from Suqian Lian Sheng Technology Co., Ltd., with a brand of UV-234.

[0088] Examples 1-15 and Comparative Examples 1-11

[0089] Examples 1-15 and Comparative Examples 1-11 each provide a PC / ABS plastic material imitating plant fluff, which contains various components and amounts as shown in Table 1 and Table 2;

[0090] In Table 1 and Table 2, the amount of each component is in “parts by weight”;

[0091] Table 1

[0092]

[0093]

[0094] Table 2

[0095]

[0096]

[0097] The preparation method of the PC / ABS plastic material imitating plant fluff provided by Examples 1-15 and Comparative Examples 1-12 includes the following steps:

[0098] (1) mixing PC resin, ABS resin, black pigment, impact agent, heat-resistant agent, antioxidant, lubricant and light stabilizer for 4 min to obtain a mixture;

[0099] (2) performing main feeding of the mixture obtained in step (1) and side feeding of fibers, and performing extrusion molding at 250°C by using a double-screw extruder to obtain the PC plastic material imitating plant fluff.

[0100] Appearance:

[0101] The flocked PC plastic materials provided by Example 1, Comparative Example 1 and Comparative Example 5 were observed by naked eyes, and the actual photos of the flocked PC plastic materials provided by Example 1, Comparative Example 1 and Comparative Example 5 are shown in FIGS. 1-3, respectively. Figs. 1-3

[0102] From the comparison, it can be seen that the fiber points of the flocked PC plastic material provided by Example 1 are well emerged without tailing phenomenon, which indicates that by selecting two PC resins with different melt indices to be matched, the embedding of the fiber points by the black resin can be reduced or even avoided, the emergence rate of the fiber points in the black resin is improved, and the tailing phenomenon is also reduced. Figs. 1-3 Performance test:

[0103] (1) Lab value: The test was performed in a reflection mode by using a Spectro 1050 benchtop spectrophotometer according to the test standard GB / T 3979-2008 Method for Measurement of Object Color.

[0104] (2) Fiber point emergence rate: Leica microscope V2rayN analysis test was used.

[0105] Specific test method: First, the fiber point sheet was placed under the microscope, and a photograph was taken at 6 times magnification. The photograph was opened by using ImageJ software, and the area S of a single fiber point was calculated. 单个 Then, the flocked PC / ABS plastic material color plate to be tested was placed under the microscope, the magnification was adjusted to 6 times, and a photograph was taken of the flocked PC / ABS plastic material color plate to be tested. The photograph was opened by using ImageJ software, and the number n of fiber points contained, the total area S of the fiber points contained, and the average area S of a single fiber point emerged on the flocked PC / ABS plastic material color plate to be tested were calculated. 总 浮现平均 总

[0106] Fiber point emergence rate Sd (%) = 1 / n x SQRT[(S 浮现平均 -S 单个 ) 2 ] x 100%;

[0107] (3) Tailing phenomenon: visual observation.

[0108] The flocked PC plastic materials provided by Examples 1-15 and Comparative Examples 1-12 were tested according to the above test method, and the test results are shown in Table 3.

[0109] Table 3

[0110] Table 3​​​​

[0111]

[0112]

[0113]

[0114] According to the data in Table 3, it can be seen that:

[0115] The PC plastic materials provided by Examples 1-15 have both high blackness and high fiber point emergence rate, and no tailing phenomenon; especially, the PC plastic materials provided by Examples 1-5 and Example 8 have L value of 27.8-27.9, and fiber point emergence rate of 87-90%, and the color is darker and the fiber point emergence rate is higher.

[0116] According to the data of Comparative Example 1 and Comparative Examples 1-8, it can be seen that, due to the use of only the first PC resin or only the second PC resin, the flow rate difference between the resin and the fiber point is too large, which not only leads to low fiber point emergence rate in the obtained PC plastic material, but also leads to tailing phenomenon due to the too large flow rate difference.

[0117] According to the data of Comparative Example 1 and Comparative Examples 9-10, it can also be seen that, when the addition amount of black pigment is too small (Comparative Example 9), the L value of the obtained PC plastic material is too high, the color of the PC plastic material is too light, and high blackness cannot be achieved; when the addition amount of black pigment is too large (Comparative Example 10), the black pigment will hinder the flow of the fiber point, leading to poor emergence effect of the fiber point in the PC plastic material.

[0118] According to the data of Comparative Example 1 and Comparative Examples 11-12, it can also be seen that the addition amount of fiber point also affects its emergence effect in the plastic material; when the addition amount of fiber point is small (Comparative Example 11), the emergence rate of fiber point in the obtained PC plastic material is low; when the addition amount of fiber point is too large (Comparative Example 12), the fiber point itself is similar to a filler, and has poor flowability in the PC resin, thereby also leading to poor emergence effect in the PC plastic material.

[0119] According to the data of Comparative Examples 1-3 and Examples 5-11, it can also be seen that, by further selecting the first PC resin and the second PC resin with more suitable melt index for matching, the flow rate of the composite resin and the flow rate of the fiber point can be closer, and thus the fiber point emergence rate of the obtained PC plastic material can be higher.

[0120] From the data of Comparative Examples 1-3 and Examples 12-13, it can also be seen that, in addition to the fact that the first PC resin and the second PC resin with a suitable melt index are matched to affect the fiber point emergence rate, the matching ratio of the first PC resin and the second PC resin also affects the fiber point emergence rate. Only when the first PC resin and the second PC resin are matched at a suitable ratio, can the PC plastic material obtained have high blackness and high fiber point emergence rate.

[0121] Finally, from the data of Comparative Example 1 and Examples 14-15, it can also be seen that different types of black pigments can directly affect the L value, i.e. the depth value, of the obtained plastic material. The selection of perylene black and benzidine black as the black pigment can cause the L value of the obtained plastic material to be slightly high, and the color to be slightly gray.

[0122] The applicant declares that the above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. It should be understood by those skilled in the art that any changes or replacements within the technical scope disclosed by the present application can be easily thought of by any person skilled in the art, and all fall within the protection scope and disclosure scope of the present application.

Claims

1. A flocked PC plastic material, characterized in that, The pseudo-flocked PC plastic material comprises the following components by weight: PC resin 50-70 wt.%; ABS resin 0-30 wt.%; impact modifier 0-20 wt.%; black pigment 0.1-1 wt.%; fiber point 0.1-1 wt.%; the PC resin comprises a first PC resin and a second PC resin, and the first PC resin has a melt index of ≤23 g / 10 min at 300°C and 1.2 kg, and the second PC resin has a melt index of ≥25 g / 10 min at 300°C and 1.2 kg; the mass ratio of the first PC resin to the second PC resin is 1:(1-5).

2. The flocked PC plastic of claim 1, wherein, the first PC resin has a melt index of 8-18 g / 10 min at 300°C and 1.2 kg.

3. The flocked PC plastic of claim 1, wherein, the second PC resin has a melt index of 28-60 g / 10 min at 300°C and 1.2 kg.

4. The flocked PC plastic of claim 1, wherein, the mass ratio of the first PC resin to the second PC resin is 1:(2.5-3.5).

5. The flocked PC plastic of claim 1, wherein, the L value of the pseudo-flocked PC plastic material is ≤30.

6. The flocked PC plastic of claim 5, wherein, the L value of the pseudo-flocked PC plastic material is ≤29.

7. The flocked PC plastic of claim 1, wherein, the content of the ABS resin in the pseudo-flocked PC plastic material is 10-30 wt.%.

8. The flocked PC plastic of claim 1, wherein, the ABS resin has a melt index of 15-25 g / 10 min at 220°C and 10 kg.

9. The flocked PC plastic of claim 1, wherein, the black pigment comprises any one or a combination of at least two of carbon black, perylene black or benzidine black.

10. The flocked PC plastic of claim 9, wherein, the black pigment is carbon black.

11. The flocked PC plastic of claim 1, wherein, the fiber point comprises mica flake type fiber point and / or gold dust type fiber point.

12. The flocked PC plastic of claim 1, wherein, the content of the impact modifier in the pseudo-flocked PC plastic material is 10-20 wt.%.

13. The flocked PC plastic of claim 1, wherein, the pseudo-flocked PC plastic material further comprises any one or a combination of at least two of heat-resistant agent, antioxidant, lubricant or light stabilizer.

14. The flocked PC plastic of claim 13, wherein, the content of the heat-resistant agent in the pseudo-flocked PC plastic material is <10 wt.%.

15. The flocked PC plastic of claim 13, wherein, the content of the antioxidant in the pseudo-flocked PC plastic material is 0.1-0.5 wt.%.

16. The flocked PC plastic of claim 13, wherein, the antioxidant comprises a combination of hindered phenol antioxidant and phosphite antioxidant.

17. The flocked PC plastic of claim 13, wherein, the content of the lubricant in the pseudo-flocked PC plastic material is 0.2-0.5 wt.%.

18. The flocked PC plastic of claim 13, wherein, the content of the light stabilizer in the pseudo-flocked PC plastic material is 0.5-1 wt.%.

19. A preparation method of the pseudo-flocked PC plastic material according to any one of claims 1-18, the preparation method comprising the following steps: (1) mixing PC resin, ABS resin, black pigment, impact modifier, optionally heat-resistant agent, optionally antioxidant, optionally lubricant and optionally light stabilizer to obtain a mixture; (2) performing main feeding of the mixture obtained in step (1) and side feeding of fiber point, and performing extrusion molding by using an extruder to obtain the pseudo-flocked PC plastic material.

20. The method of claim 19, wherein, the mixing time in step (1) is 3-5 min.

21. The method of claim 19, wherein, the extruder in step (2) is a twin-screw extruder.

22. The preparation method according to claim 19, characterized in that, the temperature of the extrusion molding in step (2) is 240-250°C.

23. Use of the pseudo-flocked PC plastic material according to any one of claims 1-18 in automotive interior and exterior trim, consumer electronic appearance parts or household appliance appearance parts.

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